refactor: improve visible condition of global search component (#5976)

#### What type of PR is this?

/area ui
/kind improvement
/milestone 2.16.x

#### What this PR does / why we need it:

优化 Console 的全局搜索对话框显示逻辑，改为未开启时不渲染组件。

#### Does this PR introduce a user-facing change?

```release-note
None
```

ui/console-src/layouts/BasicLayout.vue

@@ -295,7 +295,10 @@ onMounted(() => {
       </Teleport>
     </div>
   </div>
-  <GlobalSearchModal v-model:visible="globalSearchVisible" />
+  <GlobalSearchModal
+    v-if="globalSearchVisible"
+    @close="globalSearchVisible = false"
+  />
   <LoginModal />
 </template>
 

ui/src/components/global-search/GlobalSearchModal.vue

@@ -1,24 +1,25 @@
 <script lang="ts" setup>
-import { useRoute, useRouter, type RouteLocationRaw } from "vue-router";
+import { type RouteLocationRaw, useRoute, useRouter } from "vue-router";
 import {
-  VModal,
-  VEntity,
-  VEntityField,
-  IconLink,
   IconBookRead,
   IconFolder,
-  IconSettings,
-  IconPalette,
+  IconLink,
   IconPages,
+  IconPalette,
+  IconSettings,
   IconUserSettings,
+  VEntity,
+  VEntityField,
+  VModal,
 } from "@halo-dev/components";
-import { computed, markRaw, ref, watch, type Component } from "vue";
+import { type Component, computed, markRaw, onMounted, ref, watch } from "vue";
 import Fuse from "fuse.js";
 import { apiClient } from "@/utils/api-client";
 import { usePermission } from "@/utils/permission";
 import { useThemeStore } from "@console/stores/theme";
 import { storeToRefs } from "pinia";
 import { useI18n } from "vue-i18n";
+import { useEventListener } from "@vueuse/core";
 
 const router = useRouter();
 const route = useRoute();
@@ -27,19 +28,11 @@ const { t } = useI18n();
 const { currentUserHasPermission } = usePermission();
 const { activatedTheme } = storeToRefs(useThemeStore());
 
-const props = withDefaults(
-  defineProps<{
-    visible: boolean;
-  }>(),
-  {
-    visible: false,
-  }
-);
-
 const emit = defineEmits<{
-  (e: "update:visible", visible: boolean): void;
+  (e: "close"): void;
 }>();
 
+const modal = ref<InstanceType<typeof VModal>>();
 const globalSearchInput = ref<HTMLInputElement | null>(null);
 const keyword = ref("");
 
@@ -288,10 +281,6 @@ const handleBuildSearchIndex = () => {
 };
 
 const handleKeydown = (e: KeyboardEvent) => {
-  if (!props.visible) {
-    return;
-  }
-
   const { key, ctrlKey } = e;
 
   if (key === "ArrowUp" || (key === "k" && ctrlKey)) {
@@ -313,7 +302,7 @@ const handleKeydown = (e: KeyboardEvent) => {
   }
 
   if (key === "Escape") {
-    onVisibleChange(false);
+    modal.value?.close();
     e.preventDefault();
   }
 };
@@ -328,7 +317,7 @@ const handleRoute = async (item: SearchableItem) => {
     }
   }
   router.push(item.route);
-  emit("update:visible", false);
+  modal.value?.close();
 };
 
 watch(
@@ -349,39 +338,26 @@ watch(
   }
 );
 
-watch(
-  () => props.visible,
-  (visible) => {
-    if (visible) {
-      handleBuildSearchIndex();
+onMounted(() => {
+  handleBuildSearchIndex();
 
-      setTimeout(() => {
-        globalSearchInput.value?.focus();
-      }, 100);
+  setTimeout(() => {
+    globalSearchInput.value?.focus();
+  }, 100);
+});
 
-      document.addEventListener("keydown", handleKeydown);
-    } else {
-      document.removeEventListener("keydown", handleKeydown);
-      keyword.value = "";
-      selectedIndex.value = 0;
-    }
-  }
-);
-
-const onVisibleChange = (visible: boolean) => {
-  emit("update:visible", visible);
-};
+useEventListener("keydown", handleKeydown);
 </script>
 
 <template>
   <VModal
-    :visible="visible"
+    ref="modal"
     :body-class="['!p-0']"
     :mount-to-body="true"
     :width="650"
     :centered="false"
     :layer-closable="true"
-    @update:visible="onVisibleChange"
+    @close="emit('close')"
   >
     <div id="search-input" class="border-b border-gray-100 px-4 py-2.5">
       <input